© 2002 by Oxford University Press
Journal of the National Cancer Institute, Vol. 94, No. 22, 1666-1668,
November 20, 2002
© 2002 Oxford University Press
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Synthetic Lethality: Killing Cancer With Cancer
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The surge of optimism for new cancer drugs that target cell signaling pathways has been tempered by a dose of reality. Some patients taking Gleevec (imatinib mesylate) have developed resistance to the drug as a result of mutations in the bcr-abl fusion protein or gene amplification. The U.S. Food and Drug Administrations Oncologic Drugs Advisory Committee recently recommended AstraZenecas Iressa (gefitinib) for accelerated approval for third-line therapy for non-small cell lung cancer, but with strong reservations; a large phase III trial of the drugwhich targets the epidermal growth factor receptorresulted in no improvement in survival (see News, Nov. 6, p. 1596). And Pharmacias SU5416, which targets the vascular endothelial growth factor receptor, was abandoned in February after extensive phase II and phase III testing.
Thus far, signaling inhibitors have not proven to be a panacea, and researchers are wondering whether the problem is in the target
Lethal Combination
Cancer Unmasked
House of Cards
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